MicroBalance TM
Clockwise from top left: sea bream, sea bass, a fishmonger’s slab; rainbow trout; bream and bass
1kg of another commercial species, such as trout. FFDRs therefore measure the sustainability of fi sh farming with respects to inputs from wild fi sheries. Historically, this ra- tio was much greater than 1.0, meaning that fi sh farming depended on the use of wild fi sh to be feasible. The latest FFDR calculations confi rm that MicroBalan-
ceTM
has enabled Skretting Spain to dramatically reduce the use of wild fi sh ingredients. Portion-size seabass and seabream (400 grams) have an FFDR of 0.65 and 0.6, respectively, while portion-size trout (300 grams) has an FFDR of 0.45.
RATIO
The FFDR, which is also popularly referred to as the Fish in Fish out ratio (FIFO), is the quantity of wild fi sh used per quantity of farmed fi sh produced. This meas- ure can be weighted for fi shmeal or fi sh oil, whichever component creates a larger burden of wild fi sh in feed. Only fi shmeal and fi sh oil derived directly from a pelagic fi shery is to be included in the FFDR calculation. Fishmeal and fi sh oil derived from fi sheries by-products, such as trimmings, should not be included because the FFDR is intended to be a calculation of direct dependency on wild fi sheries. Historically, fi sh oil sourced from wild fi sheries used to be the main contributor to FIFO scores of 1.0 and above. However, the introduction of alternative oils, derived from vegetables and fi sh trimmings, into diets has contributed to a signifi cant reduction in the use of an- chovy, capelin and other wild fi sh. Furthermore, ARC has acquired vast knowledge about the use of plant protein as sources of nourishment for Mediterranean farmed fi sh. The wider use of fi sh trimmings and the legal reintro-
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duction of some ingredients from non-ruminants land animal by-products have also contributed to this success, explains Fernando Sanz Asenjo, Commercial Manager at Skretting Spain. Javier Ojeda, Manager of the Spanish marine fi sh farmer association APROMAR (Asociación Empresarial de Pro- ductores de Cultivos Marinos de España) also welcomed the results given by MicroBalanceTM
-based diets. ‘Today, fi sh farming is one of the most effi cient food
producing industries. This productivity covers the use of biological resources, energy consumption and fresh water demand. Getting here has been driven by societal concerns and our industry’s long-term vision. One of the main milestones has been aquaculture becoming a net producer of fi sh through huge improvements in fi sh feed- ing knowledge and technology,’ said Ojeida. As well as being applied in feeds for seabass, seabream and rainbow trout, the MicroBalanceTM
introduced in diets for Atlantic salmon (Salmo salar) and yellowtail (Seriola quinqueradiata). MicroBalanceTM
concept has been is
part of a development that has made it possible for the salmon industry to reduce its use of fi shmeal in the diet by 50% over the last seven years. ARC is also confi dent that it will launch a MicroBalan- ceTM solution for shrimp feed in 2014. FF
The salmon industry has reduced its proportion of fishmeal in the diet by 50 per cent in the last 7 years
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